摘要
在边坡工程中大量使用胶结式预应力锚索,但对其作用机制方面研究还很少,特别是关于锚固段的荷载传递特性还存在很多模糊认识。为此,以胶结预应力锚索锚固段与围岩体界面特性、锚固段极限黏结强度以及侧阻力分布规律为基础,给出预应力锚索锚固段合理长度的计算方法,研究岩体特性、灌浆材料特性、束体材料以及三者之间相对刚度等因素对预应力锚索锚固段荷载传递特性的影响等机制问题,为合理进行预应力锚索设计提供了依据。
The bond prestressed anchor ropes have been used in slope engineering, however, the mechanism of load transfer of bond section is not clearly seen. In this paper, the behavior of bond prestressed anchor rope is investigated based on the shear stress-slip relation of interfacebetween bond body and surrounding rock and shear lag model. Both the length and shear distribution of bond body are determined. Through a case of study, the validity of proposed method is verified by comparing the predicted results with existing experimental data.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2006年第1期117-121,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重大项目(90202007)
中国科学院知识创新工程项目(KZCX3–SW–323(1))
关键词
边坡工程
预应力锚索
锚固段长度
黏结强度
侧阻力分布
slope engineering
prestressed anchor rope
length of bond body
bond strength
side resistance distribution
